This paper describes visible target imaging simulation system and validation activities at Beijing simulation Center. The target size and position models and target energy output are validated here. The target size va...
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ISBN:
(纸本)9781622763528
This paper describes visible target imaging simulation system and validation activities at Beijing simulation Center. The target size and position models and target energy output are validated here. The target size validation is based on comparison of visible seeker data collected in the HWIL simulation to theory calculation;the target position validation is based on comparison of visible seeker data collected in the HWIL simulation to demands setting values;and the target energy validation is based on comparison of gray levels from the projector to the luminance provided by an institute of targets property research or by visual inspection.
The power system for the Future Combat System's (FCS) family of manned ground vehicles will not only need to satisfy mobility requirements, but also need to provide continuous and pulsed power for weapons, armamen...
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The power system for the Future Combat System's (FCS) family of manned ground vehicles will not only need to satisfy mobility requirements, but also need to provide continuous and pulsed power for weapons, armaments and other auxiliary loads. Investigating hybrid power technologies has been an active research area for the U.S. Army RDECOM's Tank Automotive Research, Development and Engineering Center (TARDEC) Power and Energy System Integration Laboratory (P&E SIL). The P&E SIL is located in Santa Clara, CA and is maintained by Science Applications International Corporation (SAIC). Current P&E SIL efforts include imposing realistic loads on notional combat vehicle subsystems in order to evaluate components, such as motors and batteries. Equally important research is being conducted through the application of realistic driver/commander inputs which will aid in the validation of vehicle designs, control systems and vehicle power management architectures capable of meeting the mobility and non-mobility power and energy demands of the future battlefield. This paper describes the integration of the hardware-in-the-loop (HWIL) hybrid-electric power system with a high fidelity vehicle model (HFVM) within a real-time execution environment.
Following a brief description of the program involving the realization of a rotary wing uninhabited aerial vehicle (UAV) for science applications, the flight management system of the vehicle is discussed in terms of s...
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Following a brief description of the program involving the realization of a rotary wing uninhabited aerial vehicle (UAV) for science applications, the flight management system of the vehicle is discussed in terms of sensors, flight computer, and software processes. Complicated and unstable dynamics of the baseline airframe, together with relevant uncertainties in the UAV model, prompted use of a robust multi-variable controller for stabilization and control augmentation. Control software is automatically generated and implemented in the onboard computer. Real-time, hardware-in-the-loop simulation is used to test and validate control algorithms as well as to collect data on response to pilot input and, finally, to assess and possibly improve the characteristics of the graphical user interface providing flight and mission data to the ground operator.
This paper introduces our research that is to conceive and design a micro-platform of spacecraft that we call general cell (GC). The cell is an enabling technology of microspacecraft, and fully adapts to the rapidly d...
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ISBN:
(纸本)0780393953
This paper introduces our research that is to conceive and design a micro-platform of spacecraft that we call general cell (GC). The cell is an enabling technology of microspacecraft, and fully adapts to the rapidly developing demands of distributed spacecraft system (DSS). This paper gives detail depictions of characteristics of GC at system level, and a logically hierarchical architecture of DSS is proposed by discussing an improved leader election algorithm briefly. Up to now, a prototype used to demonstrate the cell is preliminarily designed, which comprises information processing unit (IPU) and sensors and actuators units (SAU). IPU, which integrates on-board computer (OBC), attitude control system (ACS), IO subsystem, and telemetry and telecommand subsystem together, is 200 mm /spl times/ 28 mm /spl times/ 138 mm, and its dry mass is 640 g. SAU is built with hardware-in-the-loop simulation by dSPACE real-time simulation platform. The two sets of GC have implemented autonomous attitude control and simple formation flying.
A hardware-in-the-loop simulation system for the automatic transmission was developed with the availability of accelerating calculation. This development enables real-time automatic transmission shifting simulation wh...
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A hardware-in-the-loop simulation system for the automatic transmission was developed with the availability of accelerating calculation. This development enables real-time automatic transmission shifting simulation while maintaining the required calculation accuracy. The application of this system for the development of a new automatic transmission eliminates the need for full testing with a real vehicle. This has led to a reduction in the development period. (C) 2002 Society of Automotive Engineers of Japan, Inc. and Elsevier Science B.V. All rights reserved.
The theory of radio frequency homing guidance (RFHG) is the indicator that fixed on the missile detects the reflecting wave, which is the target reflects the emission electromagnetic wave that radar indicator radiated...
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ISBN:
(纸本)7506255715
The theory of radio frequency homing guidance (RFHG) is the indicator that fixed on the missile detects the reflecting wave, which is the target reflects the emission electromagnetic wave that radar indicator radiated, which searching, finding and tracking the target, and guiding the missile to the target. Radio frequency homing guidance system (RFHGS) is relate to the simulation technology, especially the, hardware-in-the-loop simulation technology. The hardware-in-the-loop simulation technology can validate the closed loop control rule dynamically, which can check up the difference between the hardware and the model. According to the experiment result amend and consummate the control rule design. If don't insure the precision of the hardware-in-the-loop simulation system, don't assure the right of simulation result. However the simulation precision and validation is relate to the precision of simulation equipment. This paper research on the error of simulation equipment and sum up the mathematics model based on analyzing the source of error about radio frequency homing guidance simulation system (RFHGSS), and summarize the generally mathematics model through the simulation experiment of some type missile.
A 3-shaft gas turbine engine for ship propulsion was taken as an object to establish the hardware-in-the-loop simulation system, which is composed of computers, real physical parts, measuring instruments, interfaces b...
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A hardware-in-the-loop simulation system for automatic transmissions has been developed with the ability to accelerate calculation time. This development enables real-time automatic transmission shifting simulation wh...
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A novel approach to power quality assessment based on real-time (RT) hardware-in-the-loop (HIL) simulation is proposed. The RT-HIL platform is being used for power quality studies of NAVY all-electric ships. The sensi...
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A novel approach to power quality assessment based on real-time (RT) hardware-in-the-loop (HIL) simulation is proposed. The RT-HIL platform is being used for power quality studies of NAVY all-electric ships. The sensitivity for power quality deviations of a variable speed drive controller card was tested in the platform. The successful experiment has contributed to the conceptual design of a universal power quality test bed, which would have the function of testing the immunity of electric components and equipment and the consequent impact on ac distribution systems.
In this paper, real-time hardware-in-the-loop (HIL) simulation is adopted to augment the development of functional reconfiguration of power electronic building blocks and universal controllers. The simulation environm...
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ISBN:
(纸本)0780390989
In this paper, real-time hardware-in-the-loop (HIL) simulation is adopted to augment the development of functional reconfiguration of power electronic building blocks and universal controllers. The simulation environment employs a commercial real-time digital simulator allowing real time simulations of large power systems. Two case studies regarding functional reconfiguration are discussed. The first case is a marine all-electric-ship application to improve system power quality. A novel control algorithm is proposed for an active filter, which is derived from reconfiguring variable speed motor drive. The second case outlines how the HIL simulator is utilized to a static synchronous compensator application where a commercial controller provides firing pulses to a simulated converter and the connected power system. Details of the control scheme, the HIL setup, and test results are given.
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